CN101782873B - External storage device having security function - Google Patents
External storage device having security function Download PDFInfo
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- CN101782873B CN101782873B CN200910003219.6A CN200910003219A CN101782873B CN 101782873 B CN101782873 B CN 101782873B CN 200910003219 A CN200910003219 A CN 200910003219A CN 101782873 B CN101782873 B CN 101782873B
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Abstract
The invention provides an external storage device having a security function. The external storage device comprises a storage device and a bridge, wherein the storage device stores the data of a computer mainframe; and the bridge comprises a storage unit and a control unit, wherein the storage unit stores the virtual device data comprising an application program, and the control unit can generate a virtual device on the computer mainframe according to the virtual device data and execute the security function of the storage device according to the application program.
Description
Technical field
The present invention relates to external storage device, espespecially a kind of external storage device with security function.
Background technology
In order to expand the function of computer system, adapt to the different demand of user, computer system external device miscellaneous also just arises at the historic moment.For example, external connected hand disk or portable memory device, the memory capacity that extendible computer system is originally limited, externally-connected optical drive and CD writer be the multimedia resource access facility of extendible computer system, and the ability of Large Volume Data backup is provided.Wherein storage device need use a kind of mediating device (can be described as bridge) to come to communicate and data transmission with main frame.
Please refer to Fig. 1, the calcspar that the external storage device that Fig. 1 is background technology is connected with main frame.External storage device 15 is connected in main frame 11, is used for receiving and storing the data from main frame 11, and it includes bridge 151 and storage device 152.Bridge 151 is connected between main frame 11 and storage device 152, be used to provide data transmission interface, so that main frame 11 can transmit according to first data transmission interface with bridge 151, and bridge 151 and storage device 152 can be transmitted according to the second data transmission interface.Therefore, from the data of main frame 11, by bridge 151, be just convertible into can with the data of storage device 152 performing data transmissions.In addition, bridge 151 includes control module 153 conventionally, and it is used for according to the order of main frame 11, controls operation the transmission of executing data according to this of bridge 151.Storage device can be Winchester disk drive, and storage device is connected in main frame by bridge, and bridge is responsible for the signal conversion work between storage device and main frame, and for main frame, bridge and storage device form external storage device.Bridge is changed and can be gone out another external storage device by dynamic virtual by the design of firmware, this virtual bench can be CD-ROM drive, on main frame, will there is virtual memory device except physical holding of the stock device, but actually only have a real external storage device.
The external storage device using at present, if wanting emulation is another virtual memory device or many virtual memory devices, all need virtual bench data content to be stored in storage device, except causing storage device available storage to reduce, also must be by ad hoc fashion ability reading out data.Virtual bench data storing, in storage device, has taken the storage space of storage device, and user can only obtain less memory capacity, and user has likely destroyed the file data structure of former storage device because change physical storage device.In addition, storage device has data and saves (security) function from damage, but user must assign the control module of particular command to bridge by being installed on the application program of main frame, is carried out the security function of storage device by control module.But application program need be installed voluntarily by user, cause the inconvenience of storage device on portably using.
Summary of the invention
Therefore, the invention provides a kind of external storage device with security function, to solve the above problems.
The invention provides a kind of external storage device, comprise storage device and bridge.This storage device is used for storing the data of main frame.This bridge is connected between this storage device and this main frame, comprises storage unit and control module.This storage unit is used for storing virtual bench data, and this virtual bench packet is containing application program.This control module is used on this main frame, producing virtual memory device according to these virtual bench data and carries out the security function of this storage device according to this application program.
Brief description of the drawings
Fig. 1 is the calcspar that the external storage device of background technology is connected with main frame.
Fig. 2 is the calcspar that the external storage device of first embodiment of the invention is connected with main frame.
Fig. 3 is the schematic diagram that the present invention automatically performs application program.
Fig. 4 is the calcspar that the external storage device of second embodiment of the invention is connected with main frame.
Fig. 5 is the process flow diagram that external storage device of the present invention and main frame communicate.
Reference numeral
11,24 main frames
15,20 external storage devices
151,23 bridges
152,22 storage devices
153,232 control modules
231 storage unit
241 application programs
Embodiment
Please refer to Fig. 2, the calcspar that the external storage device that Fig. 2 is first embodiment of the invention is connected with main frame.External storage device 20 includes storage device 22 and bridge 23.Bridge 23 connects main frame 24 according to first data transmission interface, and whether the data that judge main frame 24 belong to physical storage device 22, if, be the second data transmission interface by first data transmission interface conversion, then according to the second data transmission interface by the data storing of main frame in storage device 22.First data transmission interface is USB (universal serial bus) (Universal Serial Bus, USB) interface, IEEE1394 interface or eSATA (External Serial ATA) interface.The second data transmission interface is ide interface (Integrated Device Electronics), SATA interface (Serial ATA) or small computer system interface (Small Computer System Interface, SCSI).Bridge 23 comprises storage unit 231 and control module 232.Storage unit 231 is used for storing virtual bench data.Virtual bench data can comprise driver, various application program or various data.Control module 232 is connected in storage unit 231, is used for the operation of control store unit 231 and the transmission of executing data.
External storage device 20 of the present invention is by virtual bench data storing in the storage unit 231 on bridge 23, except keeping the full storage space of physical storage device of storage device 22 for user, also can avoid user to destroy the function of whole external storage device because changing entity apparatus.Taking virtual drive as example, in the time that external storage device 30 is connected in main frame 24, control module 232 can read the virtual bench data that are stored in storage unit 231, in the operating system of main frame 24, produces virtual drive.In addition, the operating system of main frame 24 also can be utilized the automatic executing function of CD-ROM drive to carry out to have driver, the various application program of virtual bench data and read various data.In the present embodiment, storage device 22 can be hard disk, CD-ROM drive or flash memory, and storage unit 231 can be flash memory, EEPROM or other small-sized internal memory.Virtual memory device can be hard disk, CD-ROM drive or portable internal memory.Therefore, in the time that external storage device 20 is connected in main frame 24, main frame 24 can automatically perform the application program in virtual memory device, and user can be by the application journey security function of carrying out storage device.The data security function that uses storage device itself to provide, storage device and main frame can not produce compatible problem and cause data damage.In addition, the virtual memory device that main frame can produce by bridge carrys out executive utility, has improved the convenience of external storage device 20 on portably using.
Please refer to Fig. 3, Fig. 3 is the schematic diagram that the present invention automatically performs application program.Application program is stored in storage unit, when after external storage device and main frame link, the virtual memory device producing on main frame by control module, main frame executable application programs, between application program and control module, existing setting organized particular commands (Vendor Command), and provide user to operate the interface of security function more.Hard disk is on data are saved from damage, the security function of stipulating according to ATA/ATAPI standard specification, can allow user set and save password from damage, once enable after security function setting code, data cannot access, the data of all orders that read and write data in all cannot access hard disk, carry out release unless again inputted correct password.Therefore, by being stored in the application program of storage unit, external storage device of the present invention provides security function, and user only need be connected external storage device with main frame, can carry out by application program the security function of external storage device.
Please refer to Fig. 4, the calcspar that the external storage device that Fig. 4 is second embodiment of the invention is connected with main frame.In the present embodiment, storage unit 231 can store program code and the configuration and setting of control module 232.Conventionally on bridge, simulating virtual memory device is that special applications demand is in the majority, therefore, in the storage unit 231 of bridge, can comply with different demands, stores program code and the relevant configuration setting of the difference in functionality of control module 232.In the time that external storage device starts, can define according to the program code that is stored in storage unit 231 application function of this external storage device.In addition, whether virtual memory device is connected main frame 24 with storage device and can controls according to the program code of control module 232.
Please refer to Fig. 5, Fig. 5 is the process flow diagram that external storage device of the present invention and main frame communicate.External storage device and main frame communicate and comprise the following step:
Step 510: control module reads after the program code and configuration and setting that is stored in storage unit, communicates with main frame, and now control module can inform that main frame has two storage devices to exist, for example virtual drive and hard disk.
Step 520: control module judges whether main frame issues an order to virtual drive, if so, carry out step 521, if not, carry out step 530.
Step 521: control module can determine whether according to program need be by the corresponding data of memory cell access, if need, by memory cell access data, carry out step 522; If need, by memory cell access data, carry out step 523.
Step 522: control module to main frame, carry out step 524 according to program code passback data.
Step 523: control module access is stored in the virtual bench data of storage unit and sends main frame to, carry out step 524.
Step 524: control module completes the requirement of main frame, waits for that next order arrives, and carry out step 520.
Step 530: control module judges whether main frame issues an order to hard disk, if so, carry out step 531, if not, carry out step 540.
Step 531: control module to hard disk, is treated the order of hard disk RESPONSE CALCULATION machine host by pass down the line, carry out step 532.
Step 532: control module completes the requirement of main frame, waits for that next order arrives, and carry out step 520.
Step 540: control module judges whether main frame assigns particular command, if so, carry out step 541, if not, carry out step 520.
Step 541: control module is carried out the security function of hard disk, carry out step 542.
Step 542: control module completes the requirement of main frame, waits for that next order arrives, and carry out step 520.
In sum, external storage device of the present invention comprises storage device and bridge.Storage device is used for storing the data of main frame.Bridge comprises storage unit and control module.Storage unit is used for storing virtual bench data, and this virtual bench packet is containing application program.This control module is used on this main frame, producing virtual memory device according to these virtual bench data and carries out the security function of this storage device according to this application program.The virtual memory device that can produce by bridge due to main frame is carried out the security function of storage device, has improved the convenience of external storage device on portably using.
The foregoing is only preferred embodiment of the present invention, all equivalences of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (11)
1. an external storage device, comprises:
Storage device, is used for storing the data of main frame; And
Bridge, is connected between this storage device and this main frame, comprises:
Storage unit, is used for storing virtual bench data, and this virtual bench packet is containing application program; And
Control module, what be used for producing on this main frame according to these virtual bench data virtual memory device and carry out this storage device according to this application program saves (security) function from damage.
2. external storage device as claimed in claim 1, wherein this storage device is hard disk, CD-ROM drive or flash memory.
3. external storage device as claimed in claim 1, wherein this control module is used for according to this virtual memory device of order access or this storage device of this main frame.
4. external storage device as claimed in claim 1, wherein this application program by transmit particular command to this control module to carry out the security function of this storage device.
5. external storage device as claimed in claim 1, wherein this virtual memory device is hard disk, CD-ROM drive or portable internal memory.
6. external storage device as claimed in claim 1, wherein this virtual bench packet is containing driver.
7. external storage device as claimed in claim 1, wherein this storage unit is separately used for storing program code and the configuration and setting of this control module.
8. external storage device as claimed in claim 1, wherein this bridge is connected in this main frame according to first data transmission interface, taking by the data of this main frame by this first data transmission interface conversion as the second data transmission interface.
9. external storage device as claimed in claim 8, wherein this bridge is connected in this storage device according to this second data transmission interface.
10. external storage device as claimed in claim 8, wherein this first data transmission interface is USB interface, IEEE1394 interface or eSATA (External Serial ATA) interface.
11. external storage devices as claimed in claim 8, wherein this second data transmission interface is ide interface, SATA interface or scsi interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910003219.6A CN101782873B (en) | 2009-01-15 | 2009-01-15 | External storage device having security function |
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| CN200910003219.6A CN101782873B (en) | 2009-01-15 | 2009-01-15 | External storage device having security function |
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| CN101782873A CN101782873A (en) | 2010-07-21 |
| CN101782873B true CN101782873B (en) | 2014-07-09 |
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| CN1363888A (en) * | 2001-01-09 | 2002-08-14 | 梁国恩 | Circuit for protecting data on hard disc |
| CN1492334A (en) * | 2002-03-13 | 2004-04-28 | 六舜实业股份有限公司 | Control device and method for storage firewall |
| CN1749971A (en) * | 2005-05-18 | 2006-03-22 | 程滋颐 | Improving service life of internal or external storage by using long lift non-volatile storage chip |
| CN1916875A (en) * | 2005-08-17 | 2007-02-21 | 联发科技股份有限公司 | Memory management method and system |
| CN101073070A (en) * | 2004-08-24 | 2007-11-14 | 塞门铁克操作公司 | Systems and methods for providing a modification history for a location within a data store |
| CN101079007A (en) * | 2006-05-23 | 2007-11-28 | 国际商业机器公司 | Apparatus, system, and method for presenting a storage volume as a virtual volume |
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2009
- 2009-01-15 CN CN200910003219.6A patent/CN101782873B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363888A (en) * | 2001-01-09 | 2002-08-14 | 梁国恩 | Circuit for protecting data on hard disc |
| CN1492334A (en) * | 2002-03-13 | 2004-04-28 | 六舜实业股份有限公司 | Control device and method for storage firewall |
| CN101073070A (en) * | 2004-08-24 | 2007-11-14 | 塞门铁克操作公司 | Systems and methods for providing a modification history for a location within a data store |
| CN1749971A (en) * | 2005-05-18 | 2006-03-22 | 程滋颐 | Improving service life of internal or external storage by using long lift non-volatile storage chip |
| CN1916875A (en) * | 2005-08-17 | 2007-02-21 | 联发科技股份有限公司 | Memory management method and system |
| CN101079007A (en) * | 2006-05-23 | 2007-11-28 | 国际商业机器公司 | Apparatus, system, and method for presenting a storage volume as a virtual volume |
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| CN101782873A (en) | 2010-07-21 |
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